I recorded some lectures with my smartphone mic and I was wondering is someone knows a good guide or has tips for cleaning up speech (not vocals in a song) with audacity.
The lecture is recorded via a smartphone on the desk so there are the following problems in decreasing importance:
low speech volume
few shattering noises from the table vibrating when someone hits it (I could probably dampen it in Hardware in the future)
people chatting in low voice in the vicinity
I am working with audacity, and the goal is to increase the subjective audio quality thus making it easier to listen to the lecture afterwards. The quality is already at a point where one can listen to the lecture, it is just quite exhausting.
I am aware that the audio quality will never reach a "good" level still I think that there are things that can be done.
So far I tried lowpass and highpass filtering but I somehow fail to set the right variables. The plethora of filtering options in audacity is also a bit overwhelming.